Php Laravel Mail:：assertQueued BadMethodCallException

我正在尝试编写一个laravelphpunit测试，检查在创建用户后邮件是否已排队

<?php

namespace Tests\Unit\User;

use App\User;
use Tests\TestCase;
use App\Notifications\UserCreated;
use Illuminate\Support\Facades\Mail;
use Illuminate\Foundation\Testing\WithFaker;
use Illuminate\Support\Facades\Notification;
use Illuminate\Foundation\Testing\RefreshDatabase;

class UserUnitTest extends TestCase
{
    use RefreshDatabase;

    /**
     * check if a user was created in database
     *
     * @return void
     */
    public function testUserCreate()
    {
        $user = factory(User::class)->create();

        $this->assertDatabaseHas('users', [
            'email'             => $user->email,
            'active'            => 0,
            'activation_token'  => $user->activation_token,
            'deleted_at'        => NULL
        ]);
    }

    /**
     * check if email was sent after user was created in database
     *
     * @return void
     */
    public function testEmailSentAfterUserCreated()
    {
        Notification::fake();

        // Assert that no notifications were sent...
        Notification::assertNothingSent();

        $user = factory(User::class)->create();

        // Assert a notification was sent to the given users...
        Mail::assertQueued(UserCreated::class, 1);
    }
}

当我运行testEmailSentAfterUserCreated测试时，它抛出以下异常

有1个错误：

1测试\Unit\User\UserUnitTest:：testEmailSentAfterUserCreated BadMethodCallException:Method\Mail\Mailer:：assertQueued 不存在

/home/vagrant/Projects/endiro/vendor/laravel/framework/src/light/Support/Traits/Macroable.php:103 /home/vagrant/Projects/endiro/vendor/laravel/framework/src/light/Support/Facades/Facade.php:245 /home/vagrant/Projects/endiro/tests/Unit/User/UserUnitTest.php:49

邮件类已经包含在内，我确信参数是正确的，但是我不确定为什么会出现这个错误

没有排队的断言，它有一个assertSentTo。下面是一个它应该如何显示的示例。如果通知可以排队，我认为您可以使用Queue:：false来实现这一点

Notification::assertSentTo(
    [$user], UserCreated::class
);

---

如果要在Mail:：assertQueued上断言，请使用Mail:：fake。我也面临同样的问题。我忘了在那个特定的测试用例中添加Mail:：fake。

我的回答是否有帮助，或者您面临的问题是什么？如果您在后台将邮件排队等待传递，您应该使用assertQueued方法而不是assertSent：